Gyuran Park

• Smart Ticketing & Security

• Implemented Smart Ticket use-case handling within a React Native application.

• Integrated barcode (QR code) functionality to manage ticket scanning and validation.

• Developed capture-prevention features on Android (blackout screenshots, popup alerts) and custom UI overlays.

• UI Components & Optimization

• Created a custom Toast component to display short, informative messages.

• Optimized the Home screen carousel to improve rendering performance.

• Enhanced the Item Tab experience by:

• Improving refresh controls, even when all items are expanded.

• Displaying only the first three NFC names, collapsing remaining items to 0 for a cleaner view.

• Implementing natural tab bar hiding in the “Explore” tab for specific URLs.

• Map Integration

• Integrated KakaoMap on iOS using native modules to improve location-based features.

• Purchase & Payment Flows

• Built comprehensive purchase flows (web view integration, purchase benefits bottom sheet, refund screen).

• Implemented a detailed Purchase History screen, including order status checks and order detail views.

• Designed a robust item ordering and payment flow, addressing modal crashes by updating package dependencies.

• Created a date picker component to simplify user selection processes within the payment workflow.

• Item & Asset Management

• Developed an Item Transmission API to facilitate transfers.

• Built a product information screen to highlight key details before purchase.

• Implemented an NFT transfer flow, ensuring secure and efficient asset movement.

• Biometric Authentication

• Synchronized Android biometric authentication, including a bottom sheet prompt after five failed attempts.

• Handled key invalidation upon biometric info reset to maintain security.

• Integrated biometric signature and public key authentication on iOS.

• Branding & Configuration

• Updated the application logo and branding across all screens.

• Set up a custom splash screen to reinforce brand identity.

• Resolved icon color inconsistencies in navigation, preventing crashes by upgrading relevant packages.

• App Architecture & Documentation

• Documented application design on Notion (program lists, class diagrams, component specs, and framework structure).

• Defined and enforced coding standards, contributing to a more maintainable codebase.

• Published and maintained README files to streamline team collaboration.

• Localization & Theming

• Deployed multi-language support (updated language packs and integrated them into the app).

• Supported both Light Mode and Dark Mode for an improved user experience across devices.

• Additional Highlights

• Constructed and refined reusable UI components (e.g., custom dropdowns, input fields).

• Fixed UI issues such as clipped CTAs in bottom sheets by adjusting scroll behavior and snap points.

• Extended the Item Tab for user-specific lists, grouping collections, and refining UI interactions.

Tech Stack & Full Project Ownership: Selected the technology stack, set up the project, led development, and managed deployment (100% contribution).

• CI/CD Setup: Established a continuous integration and delivery pipeline using fastlane.

• Analytics & Deep Linking: Integrated the Amplitude SDK, implemented deep and universal links with Appsflyer, and connected CodePush for real-time updates.

• Optimization & Code Quality:

• Leveraged scpd to remove duplicate code.

• Converted images to .webp format.

• Switched from .apk to .aab files, reducing overall app size.

• Security & Anti-Tampering:

• Implemented a simple password system to prevent unauthorized usage.

• Blocked rooted devices from accessing the app, reinforcing security.

• Notion Database Migration: Transitioned FAQ data from hard-coded text to a Notion Database, enabling product managers to update content without an API.

• Mapping & Real Estate: Integrated naver-map to provide property and real estate information within the app.

• Income Calculator: Created an estimated income calculator using health insurance payments, national pension data, and credit card usage.

• Error Monitoring: Implemented Sentry to track and manage errors in real-time.

• Push Notifications: Integrated Firebase Messaging for push alerts, splitting debug and production environments for improved testing and release processes.

• Holiday API Integration: Used a public holiday API via an express.js service to prevent holiday selections when scheduling loan dates, then deployed the service.

• Tech Stack & Full Project Ownership: Selected the technology stack, set up the project, developed, and deployed the application (100% contribution).

• UX Enhancement via Analytics: Improved user flows—including navigation—using data analytics tools.

• Landing Page Development: Designed and built a landing page to promote key features and improve conversions.

• Major UI Overhaul: Added item tagging and search functionalities, while overhauling the entire app UI for a more seamless user experience.

• OAuth & Analytics Integration: Implemented Kakao and Apple OAuth, and integrated Amplitude for in-depth product analytics.